Pipe-joint.



F. A. BRENKER.

PIPE JOINT.

APPLICATION mm cm. 29. if:

laimuvd Aug. 10, 1915.

Wwoz

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FEEDERIC A. BRINKER, OF MISSOURI VAL e. women, or MISS PIPEJOINT.

messes.-

Specificeltion of Letters Patent.

Patented Aug. 10, 191

Application filed October 29, 1914. Serial No. 869,187.

To all 207mm may concern Be itknown that I, Fnnnnnrc A. BRINKER, a citizen of the gnited States. residing at iiissouri Valley, in the county of Harrison and State of Iowa, have invented certain new and useful Improvements in Pipe- Joints. of which the following is a specification.

This invention relates to pipe joints, and has for its object to provide an improved pipe joint particularly useful in. flexible steam pipes, that is, pipes containing joints which are capable or being turned to make the desired connections or which are flexible litter the joints are connected.

In flexible pipe couplings heretofore made objections on account of leaks have existed incident to wear of the contacting parts. especially where the joints are subjected to frequent movement. My invention is dosigned to remedy these defects. and to proride a flexible joint in which the parts subject to wear can be easily and cheaply renewed, without renewing the more expensive parts thereof.

An embodiment of the invention is illustrated in the accompanying drawing. in

which- I igure 1 is a side elevation of the joint, ai irll ig. 2 is a longitudinal section.

Referring specifically tothe drawings, 6 indicates one pipe member of the joint. and 7 is the other, the latter being in the form of a cu? which is machined to fit snugly within the bore of the outer section (3. the meeting surfaces being indicated at S. The call threaded as indicated at 9 to receire an adjacent pipe member. The outer end of the cuff T is reduced to form a shoulder 10, presented outwardly. and a ring 11 of graphite or similar packing material is seated against thisshouldor, fitting hctwecn the cull and the outer pipe. A coiled spring 12 is located within the coil, in compression between the inside shoulder 13 thereon and a shoulder 14 in the pipe section (3, and said spring tends to force the cntl outwardly. A collar 15 fits snugly upon and surrounds the reduced projecting end of the cull. an rests against the graphite ring 11. and this collar has a flange 16 which is engaged by a flanged nut l7. which screws on external threads 18 on the pipe section 6 and draws the collar 15 down against the end of said pipe Section. as shown in Fig. 2, thereby compressing the spring 12. which compres LEY, rows, ASSIGNOR or ONE-HALF T0 nor 0on1 VALLEY, rows.

sion holds the shoulder 10 on the cull in close contact with the ring 11 and also holds the said riu c tightly against the collar 15, thereby providing a tight joint. /Vhen the parts are so connected up, the cull may he turned within the pipe section 6, toany' angle desired in use. The main part of the wear incident to such turning occurs hetwccu the nut 16 and the collar 15, or be tween said collar and thecufi' 7. and when the collar becomes worn a new one can he slipped on without renewing the cuff 7. When the nut 17 engages the sleeve directly and the joint is frequently flexed. the nut will wear a groove in the sleeve. permittii'ig leak and requiring thesuhstitutlon of a whole new sleeve.

1 claim A flexible pipe coupling comprising an outer iucuihcr, an inner culi'rotatahle with in the same and having a shoulder. and a reduced part within the outer member and spaced therefrom. a packing ring located in said space and resting against said shouldcr. a collar lilting closely around the cull in \vcarresisting contact therewith. and against said rin". said collar having an cxtcrnal flange. and a out on the outer member engaging said flange and clamping the same against the end of the outer member.

In testimony whereof. l allix in signature in prcseuce of two witnesses.

l llllDllRlC A. lllllNlil lR. Witnesses 4 R. H. l-lwunrs. T. L. FINLEY. 

